Biochar-red clay composites for energy efficiency as eco-friendly building materials: Thermal and mechanical performance

Yang, Sungwoong; Wi, Seunghwan; Lee, Jongki; Lee, Hwa Young; Kim, Sumin

doi:10.1016/j.jhazmat.2019.03.079

Cited by 61 publications

(24 citation statements)

References 32 publications

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“…In the case of commercial red clay, it has a porous structure containing numerous halloysite-based micropores, consisting chemically of SiO2, Al2O3, Fe2O3, and its chemical composition is similar to other pozzolanic materials [22][23][24]. Figure 4 shows the red clay used in this study.…”

Section: Methodsmentioning

confidence: 99%

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A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

et al. 2020

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In this study, the performance evaluation was performed by adding a polymer aqueous (PA) solution as a new additive of the red clay binder for use in the rammed-earth construction method. The evaluation items were compressive strength, water erosion, shrinkage, crystal structure, and microstructure. As a result of the experiment, the binder was improved by efficiently bonding the silica particles by the polymerized polymer. It was confirmed that adding a PA solution to red clay enhances the compressive strength, which is further improved when 5 wt% poly(Acrylic acid(AA)-co-Acrylamide(AM)) is added to the PA solution. Microstructural analysis indicated that the addition of a PA solution facilitates effective bonding of the silica particles of red clay to form hydrogen bonding with poly(AA-co-AM) and encourages aggregate formation. Therefore, the study confirmed that PA solution can be applied to satisfy the performance requirements of the rammed-earth construction by improving the durability and strength of the binder.

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Section: Methodsmentioning

confidence: 99%

“…The chemical compositions of the clay and cement used for this study are presented in Table 1. [22][23][24]. Figure 4 shows the red clay used in this study.…”

Section: Methodsmentioning

confidence: 99%

A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

et al. 2020

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“…Lee et al [294] produced a hybrid material based on biochar and natural clay used as building envelope insulation with an increment to water vapor resistance due to the presence of up to 23 wt.% of biochar. The mechanical properties of biochar-based clay composites were described by Yang et al [295]. The authors tested biochar that had been produced from several biomasses (e.g., rice husk, coconut shell, and bamboo) and showed an improvement in thermal performance and strength from a 10 wt.% mixture of bamboo-derived biochar and red clays.…”

Section: Biochar-inorganic-based Compositesmentioning

confidence: 99%

A Review of Non-Soil Biochar Applications

et al. 2020

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Biochar is the solid residue that is recovered after the thermal cracking of biomasses in an oxygen-free atmosphere. Biochar has been used for many years as a soil amendment and in general soil applications. Nonetheless, biochar is far more than a mere soil amendment. In this review, we report all the non-soil applications of biochar including environmental remediation, energy storage, composites, and catalyst production. We provide a general overview of the recent uses of biochar in material science, thus presenting this cheap and waste-derived material as a high value-added and carbonaceous source.

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“…They can be applied in various structures, from walls (Iwaro and Mwasha, 2019) to roofs; it has been shown that pre-cast ferrocement channels for roof systems filled with coconut fibres have a thermal lag time of 3.5 h, with a decrement factor of 43% (Alavez-Ramirez et al, 2014). Coconut fibres can also influence other building components through mixing with red clay, reducing the TC and opening many possible applications (Yang et al, 2019). Finally, the hard shells, fibrous husks and long pinnate leaves can be used as material to make furnishing and decorations.…”

Section: Residue Performancementioning

confidence: 99%

Valorization of agro-industry residues in the building and environmental sector: A review

et al. 2020

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Environmental pollution has become a relevant issue as the population rises and resources decrease. Reuse and recycling still have the greatest potential as they turn the waste into a new resource, representing the ‘closed-loop’ step of a circular economy (CE). Looking for new applications for agro-industry waste represents both an environmental issue, as its incorrect disposal is a cause of pollution, and a chance to exploit zero-cost natural wastes. The present review, with around 200 articles examined, focuses on possible reuses of these residues in (a) building construction, as additives to produce thermal and acoustic insulation panels, and (b) in water treatments, exploited for removal of pollutants. The selected materials (coconut, coffee, corn, cotton and rice) have industry production wastes with suitable applications in both sectors and huge worldwide availability; their reuse may thus represent a new resource, with an impact based on the production rate and the possible replacement of current inorganic materials. Along with possible implementation of the selected materials in the building industry and environmental engineering, a brief description of the production and supply chain are provided.

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Biochar-red clay composites for energy efficiency as eco-friendly building materials: Thermal and mechanical performance

Cited by 61 publications

References 32 publications

A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

A Review of Non-Soil Biochar Applications

Valorization of agro-industry residues in the building and environmental sector: A review

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